Blooming Onions

Total Time

Prep: 20 min. Bake: 40 min.


8 servings

Updated: Apr. 03, 2024
This baked blooming onion recipe is brushed with melted butter and mustard, then sprinkled with bread crumbs and seasonings. It's a lighter version of the classic, which is battered and deep-fried. It's an impressive-looking appetizer, and the dip can be used for veggies and crackers too. —Kendra Doss, Colorado Springs, Colorado


  • 2 large sweet onions
  • 1 tablespoon butter, melted
  • 2 teaspoons Dijon mustard
  • 3 tablespoons dry bread crumbs
  • 1/4 teaspoon salt
  • 1/4 teaspoon pepper
  • SAUCE:
  • 1/4 cup fat-free sour cream
  • 1/4 cup fat-free mayonnaise
  • 1-1/2 teaspoons dried minced onion
  • 1/4 teaspoon garlic powder
  • 1/4 teaspoon dill weed


  1. Preheat oven to 425°. With a sharp knife, slice 1/2 in. off the top of each onion; peel onions. Cut each into 16 wedges to within 1/2 in. of root end.
  2. Place each onion on a double thickness of heavy-duty foil (about 12 in. square). Fold foil around onions and seal tightly. Place in an ungreased 11x7-in. baking dish. Bake for 20 minutes.
  3. In a small bowl, combine butter and mustard. Open foil. Brush butter mixture over onions; sprinkle with bread crumbs, salt and pepper.
  4. Bake, leaving foil open, until crisp-tender, 18-22 minutes. Meanwhile, in a small bowl, combine sauce ingredients. Serve with onions.

Baked Blooming Onion Tips

How do you crisp up a blooming onion?

This blooming onion recipe is baked and not deep-fried, so the breading is much lighter, and it won’t be as crispy. Typically, a blooming onion is floured, battered, and then deep-fried until it’s super crispy.

What is blooming onion sauce made of?

Blooming onion sauce typically contains ketchup, horseradish, mayo, and sour cream. From there, spices can differ but those are the four main ingredients you will usually use!

Can you freeze a blooming onion?

To freeze a blooming onion, place the baked onion in a single layer on a tray in the freezer. Once firm, put in a sealed container and keep in the freezer for 2-3 months. To reheat, place onion on a tray with a wire rack and bake at 425 degrees until reheated and crispy. If you’re still craving all things oniony after trying this, try any of our favorite onion recipes.

Research contributed by Sarah Fischer, Taste of Home Culinary Assistant

Nutrition Facts

1 serving: 65 calories, 2g fat (1g saturated fat), 6mg cholesterol, 205mg sodium, 11g carbohydrate (5g sugars, 1g fiber), 2g protein. Diabetic Exchanges: 1 vegetable, 1/2 starch.